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/*
        Copyright (c) 2004-2006, The Dojo Foundation
        All Rights Reserved.

        Licensed under the Academic Free License version 2.1 or above OR the
        modified BSD license. For more information on Dojo licensing, see:

                http://dojotoolkit.org/community/licensing.shtml
*/



dojo.provide("dojo.widget.Tree");
dojo.require("dojo.widget.*");
dojo.require("dojo.event.*");
dojo.require("dojo.io.*");
dojo.require("dojo.widget.HtmlWidget");
dojo.require("dojo.widget.TreeNode");
dojo.require("dojo.html.common");
dojo.require("dojo.html.selection");
dojo.widget.defineWidget("dojo.widget.Tree", dojo.widget.HtmlWidget, function () {
        this.eventNames = {};
        this.tree = this;
        this.DNDAcceptTypes = [];
        this.actionsDisabled = [];
}, {widgetType:"Tree", eventNamesDefault:{createDOMNode:"createDOMNode", treeCreate:"treeCreate", treeDestroy:"treeDestroy", treeClick:"treeClick", iconClick:"iconClick", titleClick:"titleClick", moveFrom:"moveFrom", moveTo:"moveTo", addChild:"addChild", removeNode:"removeNode", expand:"expand", collapse:"collapse"}, isContainer:true, DNDMode:"off", lockLevel:0, strictFolders:true, DNDModes:{BETWEEN:1, ONTO:2}, DNDAcceptTypes:"", templateCssString:"\n.dojoTree {\n\tfont: caption;\n\tfont-size: 11px;\n\tfont-weight: normal;\n\toverflow: auto;\n}\n\n\n.dojoTreeNodeLabelTitle {\n\tpadding-left: 2px;\n\tcolor: WindowText;\n}\n\n.dojoTreeNodeLabel {\n\tcursor:hand;\n\tcursor:pointer;\n}\n\n.dojoTreeNodeLabelTitle:hover {\n\ttext-decoration: underline;\n}\n\n.dojoTreeNodeLabelSelected {\n\tbackground-color: Highlight;\n\tcolor: HighlightText;\n}\n\n.dojoTree div {\n\twhite-space: nowrap;\n}\n\n.dojoTree img, .dojoTreeNodeLabel img {\n\tvertical-align: middle;\n}\n\n", templateCssPath:dojo.uri.moduleUri("dojo.widget", "templates/images/Tree/Tree.css"), templateString:"<div class=\"dojoTree\"></div>", isExpanded:true, isTree:true, objectId:"", controller:"", selector:"", menu:"", expandLevel:"", blankIconSrc:dojo.uri.moduleUri("dojo.widget", "templates/images/Tree/treenode_blank.gif"), gridIconSrcT:dojo.uri.moduleUri("dojo.widget", "templates/images/Tree/treenode_grid_t.gif"), gridIconSrcL:dojo.uri.moduleUri("dojo.widget", "templates/images/Tree/treenode_grid_l.gif"), gridIconSrcV:dojo.uri.moduleUri("dojo.widget", "templates/images/Tree/treenode_grid_v.gif"), gridIconSrcP:dojo.uri.moduleUri("dojo.widget", "templates/images/Tree/treenode_grid_p.gif"), gridIconSrcC:dojo.uri.moduleUri("dojo.widget", "templates/images/Tree/treenode_grid_c.gif"), gridIconSrcX:dojo.uri.moduleUri("dojo.widget", "templates/images/Tree/treenode_grid_x.gif"), gridIconSrcY:dojo.uri.moduleUri("dojo.widget", "templates/images/Tree/treenode_grid_y.gif"), gridIconSrcZ:dojo.uri.moduleUri("dojo.widget", "templates/images/Tree/treenode_grid_z.gif"), expandIconSrcPlus:dojo.uri.moduleUri("dojo.widget", "templates/images/Tree/treenode_expand_plus.gif"), expandIconSrcMinus:dojo.uri.moduleUri("dojo.widget", "templates/images/Tree/treenode_expand_minus.gif"), expandIconSrcLoading:dojo.uri.moduleUri("dojo.widget", "templates/images/Tree/treenode_loading.gif"), iconWidth:18, iconHeight:18, showGrid:true, showRootGrid:true, actionIsDisabled:function (action) {
        var _this = this;
        return dojo.lang.inArray(_this.actionsDisabled, action);
}, actions:{ADDCHILD:"ADDCHILD"}, getInfo:function () {
        var info = {widgetId:this.widgetId, objectId:this.objectId};
        return info;
}, initializeController:function () {
        if (this.controller != "off") {
                if (this.controller) {
                        this.controller = dojo.widget.byId(this.controller);
                } else {
                        dojo.require("dojo.widget.TreeBasicController");
                        this.controller = dojo.widget.createWidget("TreeBasicController", {DNDController:(this.DNDMode ? "create" : ""), dieWithTree:true});
                }
                this.controller.listenTree(this);
        } else {
                this.controller = null;
        }
}, initializeSelector:function () {
        if (this.selector != "off") {
                if (this.selector) {
                        this.selector = dojo.widget.byId(this.selector);
                } else {
                        dojo.require("dojo.widget.TreeSelector");
                        this.selector = dojo.widget.createWidget("TreeSelector", {dieWithTree:true});
                }
                this.selector.listenTree(this);
        } else {
                this.selector = null;
        }
}, initialize:function (args, frag) {
        var _this = this;
        for (name in this.eventNamesDefault) {
                if (dojo.lang.isUndefined(this.eventNames[name])) {
                        this.eventNames[name] = this.widgetId + "/" + this.eventNamesDefault[name];
                }
        }
        for (var i = 0; i < this.actionsDisabled.length; i++) {
                this.actionsDisabled[i] = this.actionsDisabled[i].toUpperCase();
        }
        if (this.DNDMode == "off") {
                this.DNDMode = 0;
        } else {
                if (this.DNDMode == "between") {
                        this.DNDMode = this.DNDModes.ONTO | this.DNDModes.BETWEEN;
                } else {
                        if (this.DNDMode == "onto") {
                                this.DNDMode = this.DNDModes.ONTO;
                        }
                }
        }
        this.expandLevel = parseInt(this.expandLevel);
        this.initializeSelector();
        this.initializeController();
        if (this.menu) {
                this.menu = dojo.widget.byId(this.menu);
                this.menu.listenTree(this);
        }
        this.containerNode = this.domNode;
}, postCreate:function () {
        this.createDOMNode();
}, createDOMNode:function () {
        dojo.html.disableSelection(this.domNode);
        for (var i = 0; i < this.children.length; i++) {
                this.children[i].parent = this;
                var node = this.children[i].createDOMNode(this, 0);
                this.domNode.appendChild(node);
        }
        if (!this.showRootGrid) {
                for (var i = 0; i < this.children.length; i++) {
                        this.children[i].expand();
                }
        }
        dojo.event.topic.publish(this.eventNames.treeCreate, {source:this});
}, destroy:function () {
        dojo.event.topic.publish(this.tree.eventNames.treeDestroy, {source:this});
        return dojo.widget.HtmlWidget.prototype.destroy.apply(this, arguments);
}, addChild:function (child, index) {
        var message = {child:child, index:index, parent:this, domNodeInitialized:child.domNodeInitialized};
        this.doAddChild.apply(this, arguments);
        dojo.event.topic.publish(this.tree.eventNames.addChild, message);
}, doAddChild:function (child, index) {
        if (dojo.lang.isUndefined(index)) {
                index = this.children.length;
        }
        if (!child.isTreeNode) {
                dojo.raise("You can only add TreeNode widgets to a " + this.widgetType + " widget!");
                return;
        }
        if (this.isTreeNode) {
                if (!this.isFolder) {
                        this.setFolder();
                }
        }
        var _this = this;
        dojo.lang.forEach(child.getDescendants(), function (elem) {
                elem.tree = _this.tree;
        });
        child.parent = this;
        if (this.isTreeNode) {
                this.state = this.loadStates.LOADED;
        }
        if (index < this.children.length) {
                dojo.html.insertBefore(child.domNode, this.children[index].domNode);
        } else {
                this.containerNode.appendChild(child.domNode);
                if (this.isExpanded && this.isTreeNode) {
                        this.showChildren();
                }
        }
        this.children.splice(index, 0, child);
        if (child.domNodeInitialized) {
                var d = this.isTreeNode ? this.depth : -1;
                child.adjustDepth(d - child.depth + 1);
                child.updateIconTree();
        } else {
                child.depth = this.isTreeNode ? this.depth + 1 : 0;
                child.createDOMNode(child.tree, child.depth);
        }
        var prevSibling = child.getPreviousSibling();
        if (child.isLastChild() && prevSibling) {
                prevSibling.updateExpandGridColumn();
        }
}, makeBlankImg:function () {
        var img = document.createElement("img");
        img.style.width = this.iconWidth + "px";
        img.style.height = this.iconHeight + "px";
        img.src = this.blankIconSrc;
        img.style.verticalAlign = "middle";
        return img;
}, updateIconTree:function () {
        if (!this.isTree) {
                this.updateIcons();
        }
        for (var i = 0; i < this.children.length; i++) {
                this.children[i].updateIconTree();
        }
}, toString:function () {
        return "[" + this.widgetType + " ID:" + this.widgetId + "]";
}, move:function (child, newParent, index) {
        var oldParent = child.parent;
        var oldTree = child.tree;
        this.doMove.apply(this, arguments);
        var newParent = child.parent;
        var newTree = child.tree;
        var message = {oldParent:oldParent, oldTree:oldTree, newParent:newParent, newTree:newTree, child:child};
        dojo.event.topic.publish(oldTree.eventNames.moveFrom, message);
        dojo.event.topic.publish(newTree.eventNames.moveTo, message);
}, doMove:function (child, newParent, index) {
        child.parent.doRemoveNode(child);
        newParent.doAddChild(child, index);
}, removeNode:function (child) {
        if (!child.parent) {
                return;
        }
        var oldTree = child.tree;
        var oldParent = child.parent;
        var removedChild = this.doRemoveNode.apply(this, arguments);
        dojo.event.topic.publish(this.tree.eventNames.removeNode, {child:removedChild, tree:oldTree, parent:oldParent});
        return removedChild;
}, doRemoveNode:function (child) {
        if (!child.parent) {
                return;
        }
        var parent = child.parent;
        var children = parent.children;
        var index = child.getParentIndex();
        if (index < 0) {
                dojo.raise("Couldn't find node " + child + " for removal");
        }
        children.splice(index, 1);
        dojo.html.removeNode(child.domNode);
        if (parent.children.length == 0 && !parent.isTree) {
                parent.containerNode.style.display = "none";
        }
        if (index == children.length && index > 0) {
                children[index - 1].updateExpandGridColumn();
        }
        if (parent instanceof dojo.widget.Tree && index == 0 && children.length > 0) {
                children[0].updateExpandGrid();
        }
        child.parent = child.tree = null;
        return child;
}, markLoading:function () {
}, unMarkLoading:function () {
}, lock:function () {
        !this.lockLevel && this.markLoading();
        this.lockLevel++;
}, unlock:function () {
        if (!this.lockLevel) {
                dojo.raise("unlock: not locked");
        }
        this.lockLevel--;
        !this.lockLevel && this.unMarkLoading();
}, isLocked:function () {
        var node = this;
        while (true) {
                if (node.lockLevel) {
                        return true;
                }
                if (node instanceof dojo.widget.Tree) {
                        break;
                }
                node = node.parent;
        }
        return false;
}, flushLock:function () {
        this.lockLevel = 0;
        this.unMarkLoading();
}});